PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/04-01:28:10
G02     210.7          55.3               14.9 +/-    1.16      17.7 +/-    1.16  0.060 / 0.120
G06     84.8           79.2               10.0 +/-    0.30      10.2 +/-    0.30  0.060 / 0.090
G12     316.1          29.7                9.6 +/-    1.38      16.9 +/-    1.38  0.150 / 0.370
G17     49.4           39.8                7.9 +/-    1.20      11.6 +/-    1.20  0.110 / 0.340
G19     30.9           53.8               10.4 +/-    0.51      12.5 +/-    0.51  0.050 / 0.060
G24     274.7          42.3               10.6 +/-    1.12      14.9 +/-    1.12  0.050 / 0.060
G28     118.4          17.9               11.4 +/-    1.60      26.4 +/-    1.60  0.030 / 0.060